Eric Dumazet c377411f24 net: sk_add_backlog() take rmem_alloc into account ... Current socket backlog limit is not enough to really stop DDOS attacks, because user thread spend many time to process a full backlog each round, and user might crazy spin on socket lock. We should add backlog size and receive_queue size (aka rmem_alloc) to pace writers, and let user run without being slow down too much. Introduce a sk_rcvqueues_full() helper, to avoid taking socket lock in stress situations. Under huge stress from a multiqueue/RPS enabled NIC, a single flow udp receiver can now process ~200.000 pps (instead of ~100 pps before the patch) on a 8 core machine. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2010-04-27 15:13:20 -07:00
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acpi	acpi: Support IBM SMBus CMI devices	2010-03-24 14:38:37 +01:00
asm-generic
crypto
drm	Merge branch 'drm-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6	2010-04-19 07:27:06 -07:00
keys
linux	net: batch skb dequeueing from softnet input_pkt_queue	2010-04-27 15:11:49 -07:00
math-emu
media
mtd
net	net: sk_add_backlog() take rmem_alloc into account	2010-04-27 15:13:20 -07:00
pcmcia	pcmcia: use dev_pm_ops for class pcmcia_socket_class	2010-03-24 11:00:11 +01:00
rdma
rxrpc
scsi	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
sound	Merge branch 'fix/asoc' into for-linus	2010-04-07 09:54:41 +02:00
trace	Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block	2010-04-09 11:50:29 -07:00
video
xen	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
Kbuild